0.8.0 release

[KyrylR]

Also I have migrated to latest version of the rust-simplicity

[KyrylR]

apoelstra it looks like to get rid of duplicate deps like "bitcoin_hashes", "hex-conservative", miniscript project should be updated to use latest bitcoin crate (though I did not look deep into it)

[LesterEvSe]

Looks good overall. I found no blocking bugs.

A few small CHANGELOG.md suggestions before merging:

• Missing breaking change. WitnessTypes and Parameters are now also keyed by TemplateProgramWitness, not just Arguments and WitnessValues.
• as_str() is new (from refactor: introduce TemplateProgram between AST and CompiledProgram #388), so it could also go under Added.

Also non-blocking point from #388: TemplateProgram::instantiate(self, _: Arguments) ignores its argument, because parameters are already applied in compile. Since it becomes public API in 0.8.0, a short doc note saying the argument is currently unused (or making it pub(crate) for now) would avoid confusion.

[apoelstra]

miniscript project should be updated to use latest bitcoin crate

We will, eventually. But miniscript is a widely used production project and we are not going to cut a new release lightly.

To deal with hashes and hex in particular we are going to semver-trick those dependencies so that the old versions are compatible with the new.

[apoelstra]

Can you please split the rust-simplicty update and the release into separate commits?

[KyrylR]

Can you please split the rust-simplicty update and the release into separate commits?

Done

[apoelstra]

In 77dc04a:

I see there's some fixes from #415 in here, which normally I'd complain about being "unrelated changes", but since I've taken so long to review #415 I'll accept that it's my own fault. (I have run it through my local CI system 3 or 4 times but keep forgetting to investigate the elementsd failures until after they've been garbage collected, sorry..)

[apoelstra]

ACK 3ff66b2; successfully ran local tests

[apoelstra]

Did this PR have a release in it? Was it tagged and published?

[KyrylR]

Sorry, forgot to comment

Tagged and published